WMSIC Electronic Components

Nationstar NTD3535I16

ModelNTD3535I16
PackageSMD3535-3P
BrandPhotoelectric
Price Price on request Electronic component prices change quickly with market supply and demand. Please refer to the latest WMSIC quotation for current pricing.
Configuration
1 options
Configuration 25+

Available for RFQ

Technical data

Product details

19 specifications

Core information

Product name
Photoelectric NTD3535I16
Type
Nationstar
Minimum package
1000 圆盘

Technical parameters

Electronic Component
Electronic Component
Electronic Component
Photoelectric
Electronic Component
NTD3535I16
Electronic Component
1
Package
SMD3535-3P
Electronic Component
925nm~955nm
Electronic Component
Infrared Emitter
Electronic Component
120°
Electronic Component
0.08g
Electronic Component
50nm
Electronic Component
1
Electronic Component
BM0258756454
Operating Temperature
40℃~+100℃
Current
350mA
Electronic Component
65mW/sr
(Vf)
1.4V~2V

For datasheets, package documents, compatible-part guidance, or other technical resources, contact WMSIC customer service. Availability is confirmed case by case.

NTD3535I16(国星光电)产品概述

一、产品简介

NTD3535I16 是国星光电基于 SMD3535-3P 封装的近红外(NIR)发光二极管,工作波长覆盖 925nm~955nm,典型应用为夜视照明、红外通信、接近/距离传感及生物识别补光等场景。该器件在宽视角(120°)下提供较高辐射强度(65 mW/sr),适合需要大范围均匀照明或漫射光源的系统设计。

二、主要电气与光学参数

  • 波长(λ):925 nm ~ 955 nm(以 ~940 nm 位置为主,光谱半峰宽约 50 nm,属于宽谱近红外)
  • 正向压降(Vf):1.4 V ~ 2.0 V(随电流与温度变化)
  • 正向电流(If):标称 350 mA(通常为脉冲或极限值,详见厂方脉冲/连续额定)
  • 耗散功率(Pd):110 mW(器件最大耗散,需结合热设计)
  • 直流反向耐压(Vr):10 V(勿在反向条件下长时间工作)
  • 辐射强度:65 mW/sr(典型值,测试电流未注明时应以数据表测试条件为准)
  • 视角:120°(近似朗伯分布,适合漫射光照)
  • 工作温度:-40 ℃ ~ +100 ℃
  • 光谱半波宽:50 nm

备注:给出的 350 mA 与 110 mW 耗散之间存在表面上的矛盾:若按 Vf = 1.42.0 V 与 350 mA 连续工作,则器件功耗约 0.490.70 W,远超 Pd=110 mW。因此 350 mA 更可能为短脉冲或绝对最大值,设计中必须以 Pd 与热阻为依据进行连续电流限制,或向供应商确认脉冲额定条件。

三、热管理与驱动建议

  • 按 Pd 限制连续电流:基于 Pd=110 mW,连续 If 的理论上限约为 Pd / Vf,即约 55 mA~79 mA(随 Vf 取值)。为保证可靠性,推荐系统连续电流远低于该理论上限,或采用脉冲驱动并控制占空比与脉宽。
  • 脉冲驱动:若需高亮度短脉冲(接近 350 mA),必须控制脉冲宽度、占空比并进行热仿真验证;通常需低占空比(例如 <10%)及间歇冷却时间,具体参数以厂方脉冲数据为准。
  • 驱动方式:优先使用恒流驱动器或恒流-恒温联合控制,避免直接恒压驱动。低成本方案可串联限流电阻用于小电流场景。对于 PWM 调光,应保证开关频率高于可见频闪阈值且考虑上升/下降时间对光谱与脉冲能量的影响。
  • PCB 热设计:SMD3535-3P 封装建议在 PCB 下方和焊盘处提供足够铜箔散热面积(多层板通过过孔连至内层/底层散热铜),并减小热阻以维持结温在安全范围内。
  • 反向保护:因 Vr=10 V,建议在系统中加入反向保护二极管或限压措施,防止静电或误接导致反向击穿。

四、典型应用场景

  • 移动设备与安防中的夜视/无光环境补光(940 nm 波段对硅检测器有良好响应且不可见)
  • 红外遥控与短距离通信(需配合接收器滤波与调制方案)
  • 接近传感、手势识别及 ToF/结构光辅助照明(配合光学透镜与扩散件)
  • 生物识别(虹膜/眼部近红外照明,设计时注意人眼安全与功率限制)

五、封装与可制造性

  • 封装:SMD3535-3P,适合标准表面贴装生产线,兼容回流焊工艺。
  • 焊接工艺:遵循国星光电提供的回流焊曲线与湿敏等级(MSL)要求;通常 SMD 封装回流峰值温度不超过 260 ℃,具体请参照厂家资料。
  • 贴装注意:避免在高温/潮湿条件下长时间暴露,必要时进行烘烤处理以防吸湿发泡。

六、可靠性与注意事项

  • 环境适应:器件额定工作温度 -40 ℃~+100 ℃,应用设计时需考虑工作环境对 Vf、光输出的影响并进行温度补偿。
  • ESD/过压保护:增加静电防护与浪涌抑制,尤其是在高电流脉冲场景下。
  • 光学安全:940 nm 波段肉眼不可见但对视网膜仍有风险,系统设计与测试应评估 IEC/EN 光学安全标准要求,必要时加入限流与遮挡措施。

七、选型建议与对比

  • 若系统需要连续高电流输出且高亮度为首要目标,应确认厂方提供的连续 If 额定与热阻参数,或选择标注较高 Pd 与更大散热面积的封装。
  • 若以低功耗、长寿命与均匀照明为目标,可在 20~50 mA 区间工作并使用多颗并联进行光均匀布局。
  • 在不确定脉冲极限时,与供应商确认脉冲宽度、占空比及测试条件,避免在实际应用中超限操作导致器件过早失效。

总结:NTD3535I16 提供在 925–955 nm 范围内较宽谱的近红外辐射与 120° 大视角,适合漫射式近红外照明场景。但设计时必须重视热管理与驱动策略,严格按照 Pd 与数据表脉冲/连续额定来确定工作点,以保证性能与寿命。若需详细电气/热仿真数据或封装尺寸与回流曲线,建议结合厂方完整数据手册做最终设计。

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